package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.Websocket.WebSocketServer;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.vo.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {


    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WebSocketServer webSocketServer;
    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {

        //处理各种业务异常；地址为空，购物车数据为空
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //查询当前用户车数据
        Long id = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setId(id);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);

        if (list == null || list.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        String address= addressBook.getProvinceName()+"-"+addressBook.getCityName()+"-"+addressBook.getDistrictName()+"-"+addressBook.getDetail();
        orders.setAddress(address);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(id);

        orderMapper.insert(orders);
        //向订单表明细表插入n条数据
        List<OrderDetail> orderDetailList =new ArrayList<>();
        for (ShoppingCart cart : list){
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }

        orderDetailMapper.insertBatch(orderDetailList);
        //清空当前用户的购物车数据
        shoppingCartMapper.DeleteByUserId(id);
        //封装VO返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();
        return orderSubmitVO;
    }

    /**
     * 查询订单详情
     * @param id
     */
    public OrderVO details(Long id) {

        OrderVO orderVO=new OrderVO();
        Orders orders= orderMapper.getById(id);
        BeanUtils.copyProperties(orders, orderVO);
        List<OrderDetail> list=new ArrayList<>();
        list =orderDetailMapper.getByOrderId(id);
        orderVO.setOrderDetailList(list);
        return orderVO;

    }

    /**
     * 历史订单查询
     * @param pageNum
     * @param pageSize
     * @return
     */
    public PageResult pageQuery(int pageNum, int pageSize,Integer status) {
        PageHelper.startPage(pageNum, pageSize);

        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        // 分页条件查询
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList();

        // 查询出订单明细，并封装入OrderVO进行响应
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();// 订单id

                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }

    /**
     * 取消订单
     * @param id
     */
    public void cancel(Long id) {
        Orders byId = orderMapper.getById(id);
        if (byId == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (byId.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(byId.getId());

        // 订单处于待接单状态下取消，需要进行退款
        if (byId.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
//            //调用微信支付退款接口
//            weChatPayUtil.refund(
//                    ordersDB.getNumber(), //商户订单号
//                    ordersDB.getNumber(), //商户退款单号
//                    new BigDecimal(0.01),//退款金额，单位 元
//                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);

    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );

//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }
//
//        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
//        vo.setPackageStr(jsonObject.getString("package"));
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "ORDERPAID");
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改
        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付
        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单

        //发现没有将支付时间 check_out属性赋值，所以在这里更新
        LocalDateTime check_out_time = LocalDateTime.now();

        //获取订单号码
        String orderNumber = ordersPaymentDTO.getOrderNumber();

        log.info("调用updateStatus，用于替换微信支付更新数据库状态的问题");
        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orderNumber);

        Orders byNumber = orderMapper.getByNumber(orderNumber);
        Map map=new HashMap();
        map.put("type",1);
        map.put("orderId", byNumber.getId());
        map.put("content", "订单号："+orderNumber);

        String jsonString = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(jsonString);
        return vo;

    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
    }

    /**
     * 再来一单
     * @param id
     */
    public void repetition(Long id) {
        // 查询当前用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        // 将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;
        }).collect(Collectors.toList());

        // 将购物车对象批量添加到数据库
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 条件查询
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page =orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> orderVo = getOrderVo(page);


        return new PageResult(page.getTotal(),orderVo);
    }

    /**
     * 各个状态的订单数量统计
     * @return
     */
    public OrderStatisticsVO statistics() {

        Integer toBeConfirmed =orderMapper.countStatus(Orders.TO_BE_CONFIRMED);

        Integer confirmed =orderMapper.countStatus(Orders.CONFIRMED);

        Integer deliveryInProgress =orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        OrderStatisticsVO vo = new OrderStatisticsVO();
        vo.setToBeConfirmed(toBeConfirmed);
        vo.setConfirmed(confirmed);
        vo.setDeliveryInProgress(deliveryInProgress);

        return vo;
    }

    /**
     * 派送订单
     * @param id
     */
    public void delivery(Long id) {
        Orders byId = orderMapper.getById(id);
        if (byId == null || !byId.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(byId.getId());
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    /**
     * 接单
     * @param ordersConfirmDTO
     */
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
       Orders orders=Orders.builder()
               .id(ordersConfirmDTO.getId())
               .status(Orders.CONFIRMED)
               .build();
       orderMapper.update(orders);

    }

    /**
     * 完成订单
     * @param id
     */
    public void complete(Long id) {
        Orders byId = orderMapper.getById(id);
        if (byId == null || !byId.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(byId.getId());
        orders.setStatus(Orders.COMPLETED);
        orderMapper.update(orders);
    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     */
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        Long id = ordersRejectionDTO.getId();
        Orders ordersDB = orderMapper.getById(id);

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * 取消订单
     * @param ordersCancelDTO
     */
    public void cancelOrder(OrdersCancelDTO ordersCancelDTO) {
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 催单
     * @param id
     */
    public void reminder(Long id) {

        Orders byId = orderMapper.getById(id);
        if (byId == null ) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Map map=new HashMap();
        map.put("type",2);
        map.put("orderId",id);
        map.put("content","订单号"+byId.getNumber());

        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }




    public List<OrderVO> getOrderVo(Page<Orders> page) {
        List<OrderVO> orderVOList = new ArrayList<>();

        for (Orders orders : page) {
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(orders, orderVO);
            String orderDishes= getOrderDishes(orders);
            orderVO.setOrderDishes(orderDishes);
            orderVOList.add(orderVO);
        }
        return orderVOList;
    }

    public String getOrderDishes(Orders orders) {

        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        List<String> collect = orderDetailList.stream().map(x -> {
            String orderDishes = x.getName() + "*" + x.getNumber() + ";";
            return orderDishes;
        }).collect(Collectors.toList());

        return String.join(",", collect);
    }

}
